Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Changsha, Hunan, China:

About this route:

A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Changsha Huanghua International Airport (CSX), Changsha, Hunan, China would travel a Great Circle distance of 6,176 miles (or 9,939 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Seattle–Tacoma International Airport and Changsha Huanghua International Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Seattle–Tacoma International Airport and Changsha Huanghua International Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Seattle–Tacoma International Airport (SEA):

• Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
• The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
• The two-story North Concourse added four new gate positions and a new wing 600 feet long and 30 feet wide.
• The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.
• In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
• Seattle–Tacoma International Airport (SEA) has 3 runways.
• A recurring problem at the airport is misidentification of the westernmost taxiway, Taxiway Tango, as a runway.
• The airport is also served both by the King County Metro bus system and Sound Transit regional express buses.
• Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.

Facts about Changsha Huanghua International Airport (CSX):

• Changsha Huanghua International Airport (CSX) currently has only 1 runway.
• The furthest airport from Changsha Huanghua International Airport (CSX) is Coronel Felipe Varela International Airport (CTC), which is nearly antipodal to Changsha Huanghua International Airport (meaning Changsha Huanghua International Airport is almost on the exact opposite side of the Earth from Coronel Felipe Varela International Airport), and is located 12,369 miles (19,905 kilometers) away in Catamarca, Catamarca, Argentina.
• The closest airport to Changsha Huanghua International Airport (CSX) is Yichun Mingyueshan Airport (YIC), which is located 72 miles (115 kilometers) ESE of CSX.
• Because of Changsha Huanghua International Airport's relatively low elevation of 217 feet, planes can take off or land at Changsha Huanghua International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Changsha Huanghua International Airport handled 13,684,731 passengers last year.
• Construction for the airport started on June 25, 1986, and the first flight departed on August 29, 1989.
• In addition to being known as "Changsha Huanghua International Airport", other names for CSX include "长沙黄花国际机场" and "Chángshā Huánghuā Guójì Jīchǎng".